A hammer used in bucking ore (see quot.).

See quot. 1683: but cf. buck, v.5, bucking, n.4 Obsolete.

(a) the apparatus used to crush ores by means of a pestle or series of pestles operated by machinery, also attributive; (b) an oil-crushing mill of…

A stamp mill utilizing a steam hammer, formerly used in the United States for crushing ore.

A machine with powerful jaws for crushing ore, etc.

an ore-crushing machine similar to the jaw-breaker.

A spalling-machine.

An apparatus for grinding and mixing ores by the action of a heavy stone dragged round on a circular bed.

A rude form of mill for grinding ores.

= gravity stamp n. at gravity, n. compounds 2.

a mechanism for grinding dry substances into powder, consisting of a horizontal cylinder rotating on its axis and containing a number of balls of a…

a machine for crushing ore in which a heavy weight is repeatedly raised by a revolving cam and allowed to drop on the ore.

A flat-surfaced boss, knob, or projection on a roll for crushing ore. Also attributive.

(a) a tube-making establishment or machine; (b) a mill for pulverizing ore, etc., which is placed in a revolving cylinder with loose flints or…